How to Propagate round-leaved hydrangea?
Propagate by semi-ripe cuttings in late summer or early autumn

round-leaved hydrangea · Hydrangea obtusifolia
Ideal against a wall or up a tree, in moist, well-drained loamy soil in sun or dappled sun. Needs a very sheltered position
Propagate by semi-ripe cuttings in late summer or early autumn